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Posted to dev@tapestry.apache.org by "Michael Wyraz (JIRA)" <ji...@apache.org> on 2014/08/26 13:09:58 UTC
[jira] [Created] (TAP5-2376) Add a "switch" component
Michael Wyraz created TAP5-2376:
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Summary: Add a "switch" component
Key: TAP5-2376
URL: https://issues.apache.org/jira/browse/TAP5-2376
Project: Tapestry 5
Issue Type: New Feature
Components: tapestry-core
Reporter: Michael Wyraz
Priority: Trivial
Like the "if" component, a simple switch component should be added to the set of default components. The documentation in http://tapestry.apache.org/switching-cases.html should be changed accordingly.
Example:
import javax.inject.Inject;
import org.apache.tapestry5.Block;
import org.apache.tapestry5.ComponentResources;
import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.annotations.SupportsInformalParameters;
@SupportsInformalParameters
public class Switch
{
@Parameter(required=true)
protected String value;
@Inject
protected ComponentResources resources;
Object beginRender(MarkupWriter writer)
{
if (value!=null)
{
Block block=resources.getBlockParameter(value);
if (block!=null) return block;
}
return resources.getBody();
}
boolean beforeRenderBody()
{
return false;
}
}
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